updated management command to work with both optparse/argparse
updated management command to work with both optparse/argparse

patrys/opbeat_python,patrys/opbeat_python,patrys/opbeat_python,beniwohli/apm-agent-python,beniwohli/apm-agent-python,beniwohli/apm-agent-python,patrys/opbeat_python,beniwohli/apm-agent-python